含铁回收物料压球工艺规范
Technical specification of making ball using recycled iron materials
2017-04-12
WS 720-2015
建材物流业防尘技术规范
Technical specification of dust for building materials logistics
2015-03-09
T/JSJCXH 7-2025
建材矿山皮带运输隧道设计技术规范
Technical specifications for design of belt transport tunnels for building materials mines
2025-03-18
NB/T 20341-2015
压水堆核电厂核岛厂房用孔洞封堵材料和嵌缝材料技术要求
Technical specification for nuclear island building hole blocking material and caulking material of PWR nuclear power plants